What is the difference between marsupial and placental mammals? 

A. Placental mammals are fully developed before birth. Marsupials are born before they are fully developed and must complete their development in a pouch.
B. Marsupials produce shelled eggs.
C. Placentals nurse their young while marsupials do not.
D. Marsupials do not produce milk and placentals do.


A. Placental mammals are fully developed before birth. Marsupials are born before they are fully developed and must complete their development in a pouch.

Biology & Microbiology

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ATP molecules are charged during cellular respiration; where does the energy to charge the ATPs comes from?

A. The energy comes from the building of carbon dioxide. B. The energy comes from the breaking of oxygen. C. The energy comes from the breaking of chemical bonds within glucose. D. The energy comes from the water.

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All the cells in a cancerous tumor are ____________________ directly descended from one cell

Fill in the blank(s) with correct word

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Typical fat molecules have ____ fatty acid chain(s)

a. one b. two c. three d. four e. five

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In balanced translocation heterozygotes, which pattern of chromosome segregation produces viable gametes and progeny?

A) adjacent-1 segregation B) adjacent-2 segregation C) alternate segregation D) Adjacent-1 and alternate segregation are both viable. E) Adjacent-1, adjacent-2, and alternate segregation are all viable.

Biology & Microbiology